Recent content by vDrag0n

  1. V

    How do you evaluate the integral of arcsin(sin(x)) from 0 to 2pi?

    Homework Statement int (1/(4-r^2)^0.5) dr dx, r=0 to 2sinx, x=0 to 2pi Homework Equations How to continue the integral of x The Attempt at a Solution I'm stuck at int(arcsin(sinx)) dx, x=0 to 2pi
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    Parametrize and find the surface area

    I've rethought this and here's my try. http://img717.imageshack.us/img717/6788/answer.png Uploaded with ImageShack.us
  3. V

    Parametrize and find the surface area

    Homework Statement a)parametrize the upper surface of that portion of the sphere x^2 + y^2 +z^2 = 4 contained within the cylinder, x^2 + y^2 = 2y b)find the area of the surface Homework Equations how to find the range for phi. for paramaetrizing into spherical coordinates The...